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Engine Performance + Maintenance
If it's under the hood, its in here.
96+ Vortec Performance + Computer Swaps
If you want to do the 0411 PCM swap or have a 1996+ Vortec motor this is your forum!
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T
L31 Extreme Budget Build
33 minutes ago
tayto
LSX + Carb Swaps
This section is for info on LSX or carburetor swaps into the OBS trucks.
Threads
631
Messages
7.9K
Threads
631
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7.9K
6.0 turbo build advice
Yesterday at 9:00 AM
Erik the Awful
Exhaust
Anything exhaust - from headers cats and pipes to tips.
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13.8K
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13.8K
1998 k1500 5.7L exhaust flange leak broken center stud
Wednesday at 1:15 PM
movietvet
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Sticky
88-98 Service Manuals
hatzie
Dec 15, 2018
13
14
15
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142
Views
238K
Tuesday at 8:52 PM
hatzie
Sticky
The Stupid Engine Questions Thread
Mike
Dec 3, 2009
207
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209
Replies
2K
Views
366K
Apr 12, 2024
Orpedcrow
Sticky
Let's get connected!!!
Scooterwrench
Oct 1, 2023
4
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6
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59
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6K
Apr 1, 2024
Scooterwrench
Sticky
GMT400 - Community Scan Tool
studigggs
Jan 9, 2023
30
31
32
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311
Views
32K
Mar 30, 2024
Bob2650
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Sticky
How to Put a Vortec Motor in a TBI Truck
Erik the Awful
Jun 17, 2020
10
11
12
Replies
113
Views
73K
Mar 26, 2024
rebelyell
R
Sticky
TBI small block intake gasket replacement (PIC HEAVY)
someotherguy
Dec 25, 2022
3
4
5
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41
Views
13K
Feb 16, 2024
95OBSMan
Sticky
Engine Oil Cooler Upgrade: Add 2 quarts! (SAS guys you'll want to see this)
88GMCtruck
Apr 14, 2010
2
3
Replies
28
Views
73K
Dec 27, 2023
pgutier1
Sticky
How to MarkVIII your OBS on a budget..!
monstar_est87
Apr 30, 2012
16
17
18
Replies
171
Views
145K
Sep 23, 2023
Casey916
Sticky
Putting A Chip In A TBI Truck
Bighead38
Dec 3, 2009
19
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21
Replies
202
Views
294K
Jul 10, 2023
mwilliams55555
Sticky
Maintenance: RPO Code Database & Decoder
Greg
Dec 4, 2009
2
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4
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33
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49K
Jul 3, 2023
GoToGuy
Sticky
How to Replace oil filter adapter gasket & o-ring
Hodges87
Dec 14, 2009
4
5
6
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55
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159K
Jun 20, 2023
Illbedipped
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Sticky
The Ultimate 88-98 Performance Toolbox
Devs93
Aug 1, 2012
2
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4
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35
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248K
Mar 12, 2023
jpcedotal
Sticky
GMT400 History
Greg
Mar 16, 2010
23
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25
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245
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326K
Feb 27, 2023
Will Fuller
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Sticky
Intake Gasket Replacement
Ginger
Dec 4, 2009
11
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124
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120K
Dec 9, 2022
mary7654
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S
Sticky
Tune Up Parts Numbers
supjim12
Dec 22, 2009
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37
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65K
May 15, 2022
Erik the Awful
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ULTIMATE TBI mods stage 1
shelbyt.67
Jun 28, 2012
26
27
28
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273
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327K
May 5, 2022
PlayingWithTBI
Sticky
Water Pump Relacement
Ginger
Dec 4, 2009
7
8
9
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86
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84K
Jun 7, 2021
HotWheelsBurban
S
1993 Yukon crate motor hydraulic roller lifter cleaning and adjustment journey - (Solved)
scott2093
Feb 19, 2024
26
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28
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275
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12K
Today at 12:58 AM
scott2093
S
S
Another Cam Post.
Suavecito619
Yesterday at 4:30 PM
Replies
1
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81
Today at 12:40 AM
Sean Buick 76
J
91 silverado AC parts required for R134a
jwc55
Yesterday at 8:59 PM
Replies
6
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77
Today at 12:17 AM
someotherguy
93 5.7 cat delete o2 sensor light
ol-Betsy
Wednesday at 7:19 PM
2
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19
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249
Yesterday at 11:20 PM
ol-Betsy
Fuel Quality!
Scooterwrench
Tuesday at 3:02 PM
2
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4
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37
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666
Yesterday at 11:04 PM
Caman96
Engines 101
NCBrochacho
Yesterday at 10:48 AM
2
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15
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280
Yesterday at 10:49 PM
Hipster
E
Help! Stripped distributer gear
Emichaud
Jul 4, 2023
2
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15
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1K
Yesterday at 9:47 PM
scott2093
S
S
TBI to Terminator
Swill2
Wednesday at 9:48 AM
2
Replies
10
Views
256
Yesterday at 9:35 PM
NCchris
N
'94 Jumping Gages
name
Yesterday at 6:37 PM
Replies
1
Views
61
Yesterday at 9:25 PM
thinger2
A
Are high % readings good on stft
A97obs
Yesterday at 8:16 PM
Replies
1
Views
53
Yesterday at 8:46 PM
termite
R
Looking for upgraded radiator
RCC1
Feb 4, 2024
Replies
7
Views
608
Yesterday at 8:26 PM
GoToGuy
Vortec 454 Injectors
454C2500Longbed
Feb 5, 2024
4
5
6
Replies
59
Views
5K
Yesterday at 6:47 PM
Supercharged111
S
F
1995 Chevy G30 Van 5.7L V8 Engine Knock
frankytheg30
Yesterday at 9:43 AM
Replies
3
Views
53
Yesterday at 6:05 PM
scott2093
S
8
AIR Injection needed for 88 K1500
88k1500silvy
Apr 2, 2024
2
Replies
18
Views
509
Yesterday at 5:58 PM
Schurkey
1997 Chevy C1500 5.7
best97obs
Jul 30, 2023
2
3
Replies
21
Views
3K
Yesterday at 3:01 PM
SlamTheMan
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